20908860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49783}}^1$

素因数の和:49802

約数の個数: 48

約数和(自身を含む): 66909696

約数和(自身を除く): 46000836

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49783, 99566, 149349, 199132, 248915, 298698, 348481, 497830, 597396, 696962, 746745, 995660, 1045443, 1393924, 1493490, 1742405, 2090886, 2986980, 3484810, 4181772, 5227215, 6969620, 10454430, 20908860]

約数ペア:

[(1, 20908860), (2, 10454430), (3, 6969620), (4, 5227215), (5, 4181772), (6, 3484810), (7, 2986980), (10, 2090886), (12, 1742405), (14, 1493490), (15, 1393924), (20, 1045443), (21, 995660), (28, 746745), (30, 696962), (35, 597396), (42, 497830), (60, 348481), (70, 298698), (84, 248915), (105, 199132), (140, 149349), (210, 99566), (420, 49783)]